Engine stalls when turning

Coming off the highway (60 mph) under moderate braking and turning the engine will stall and die. It will restart immediately with only couple seconds of cranking.
All other running characteristics are normal.
What it is
67 Barracuda,727 with 3000rpm converter, 3:55 gear
.030 over 340 X head, 10:1, mild roller cam
Edelbrock 1407 carb on a dual plane manifold, Edelbrock mechanical fuel pump.
Complete FBO electronic ignition 14* initial 18* mechanical with vacuum advance
Autolite 63 plugs
So far I have
Changed plugs - old ones looked perfect
Disassembled carb checked float settings, cleaned center squinter and venturi's - all appeared normal.
Replaced accelerator pump and increased primary jet one size.
Checked fuel pressure and to my surprise it is 8-9 psi - high - verified with 3 different gauges. New pump on order
Added 1/2 turn on the idle mixture screws and turned idle up to 900rpm - still stalls

None of the above made any change to the stalling.
My hair is falling out and my gums a bleeding from stress, I had the wife hide all my guns.